What is Phia, Bill Gates' daughter's startup accused of fake online sales?

Phia is an AI-powered shopping assistant startup co-founded in 2025 by Phoebe Gates, daughter of Bill Gates, and entrepreneur Sophia Kianni. The company has been accused of using "cookie stuffing" to earn commissions on sales it allegedly did not generate. Its browser extension compares prices across retailers, finds second-hand fashion items and automatically searches for discount codes.